Install, if necessary, and load R libraries

Usage

require_package(pkgs, loading = TRUE)

Arguments

pkgs: package names as a character vector
loading: if TRUE, package is loaded

Value

Invisibly NULL. Called for its side effects of installing the missing packages of pkgs and, when loading is TRUE, attaching them to the search path.

Examples

if (FALSE) { # \dontrun{
# Not run: installs and attaches packages as a side effect.
require_package(c("data.table","gdxtools"), loading = FALSE)
} # }